make ProxyService::CreateSystemProxyConfigService return scoped_ptrs NOT FOR REVIEW

components/cronet/android/cronet_url_request_context_adapter.cc

Index: components/cronet/android/cronet_url_request_context_adapter.cc
diff --git a/components/cronet/android/cronet_url_request_context_adapter.cc b/components/cronet/android/cronet_url_request_context_adapter.cc
index 0cb2892a3f789dbd6f87c6f53ad7a51eeb32c06a..4f808ab0850e943391ebdb5a1d09dab88037f873 100644
--- a/components/cronet/android/cronet_url_request_context_adapter.cc
+++ b/components/cronet/android/cronet_url_request_context_adapter.cc
@@ -147,8 +147,8 @@ void CronetURLRequestContextAdapter::InitRequestContextOnMainThread(
     jobject jcaller) {
   base::android::ScopedJavaGlobalRef<jobject> jcaller_ref;
   jcaller_ref.Reset(env, jcaller);
-  proxy_config_service_.reset(net::ProxyService::CreateSystemProxyConfigService(
-      GetNetworkTaskRunner(), nullptr));
+  proxy_config_service_ = net::ProxyService::CreateSystemProxyConfigService(
+      GetNetworkTaskRunner(), nullptr);
   GetNetworkTaskRunner()->PostTask(
       FROM_HERE,
       base::Bind(&CronetURLRequestContextAdapter::InitializeOnNetworkThread,